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Finding the Fourth Proportional to 521,679.88, 782,519.82 and 284,893.39

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Solution

The fourth proportional to 521,679.88, 782,519.82 and 284,893.39 is: 427,340.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,679.88 : 782,519.82 = 284,893.39 : x
  2. Step 2: Convert to fraction form
    521,679.88/782,519.82 = 284,893.39/x
  3. Step 3: Cross multiply
    521,679.88x = 782,519.82 × 284,893.39
  4. Step 4: Simplify right side
    521,679.88x = 222,934,724,261.99
  5. Step 5: Solve for x
    x = 222,934,724,261.99/521,679.88
  6. Step 6: Final answer
    x = 427,340.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.